sin 60⁰ =AD/AB
√3/2=24√3/AB
AB=24√3 *2/√3=48 cm
cos 60⁰ =BD/AB
1/2=BD/48
BD=48*1/2=24 cm
DC=AD=24√3 cm (deoarece triunghiul ADC este dreptunghic cu un unghi de 45⁰ deci isoscel)
BC=24+24√3
AC=√[(24√3)²+(24√3)²]=24√3 *√2=
P=AB+BC+AC=48+24+24√3+24√6=72+24√3+24√6
raspuns corect c)